Radium emergency light



W. S. NELSEN.

RADIUM EMERGENCY LIGHT.

APPLICATION FILED APR. 19, 1921.

Pa'tente Apr. 18, 1922 Q INVENTOR.

ATTORNEYS UNITED- STATES WALTER. 5. NELSEN, 0F

PATENT 0 Erica.

VALLEJO, CALHORNIA.

RADIUM EMERGENCY LIGHT.

Application filed April 19,

' lowing is a specification.

The present invention relates to improvements in radium emergency lightsand its object is to provide a safety light for automobiles or othervehicles by using radium paint or any other illuminous paint as alighting means. It frequently happens that in an automobile thebatteries give out, the wires become disconnected or for some otherreason the lights cease to work, and, if this happens at the rear end ofthe car, it is not even always noticed by the driver. The object of myinvention is to provide a light which in such cases, although not verybrilliant, will make it possible for the driver to continue his travelto the nearest repair station and, when in the rear of the car, willfurnish sufiicient'light to prevent accidents and to comply with policeregulations.

I attain these objects by means of the mechanism illustrated in theaccompanying drawing, in' which Figure 1 represents a front view of mylight, Figure 2- a vertical section through the'same along line 22 ofFigure 1, Figure 3 a front view of a modified form of my light,Figure 4a vertical section through the same along line 44 of Figure 3. Figure 5a front view of another modification and Figure 6 a vertical sectionthrough the same along line 66 of Figure 0.

Referring to the drawing in detail it will be seen that in Figures 1 and2 my light 1 is shown as being sunk into the dash board (2) of anautomobile. It may, of course, be attached to the automobile in anyconvenient place, in front or in the rear, in the dash or right near thehead lights, and it consists of a concave dial (5) made of any suitableniaterial such as aluminum, copper. tin. glass, brass, etc. The surfaceof this dial is provided with a coat of radium paint as shown at (10) sothat it will emit rays of light that show up sufliciently at night time,in the absenceof any stronger and brighter lights. to lessen the dangerof collision in case the electric or other lights of the automobile orvehicle fail to perform their duty.

The fastening means for this light are very simple. As shown in thedrawing, the

. concave face of the light is provided with a Specification of LettersPatent. Patented Apr. 18, 1922.

1921. Serial No. 462,648.

flange (3), made preferably of the same mater al as the dial andprovided with a plurallty of perforations (4) through which screws (6)may pass to be'screwed into the dash board or other support selected.

Figures 3 and 5 show variations of this simple form. The variation shownin Figure 3, and in section in Figure 4, varies from that of Figure 1 inso far as the concave surface (t) is used as a mere reflecting surface,while a central convex part is radium painted and sheds its light on there- Hector, which latter reflects it into. the universe so that it maybe observed by a person or driverof a machine ap roaching theautomobile. The variation s own in Figure 5. and in section in Figure 6,difiers from the one shown in Figure 3 in this, that the concave part ofthe surface is coated with the radium paint, while the inner, convexpart 4 (12) is provided with a plurality of crystals of red, white orblue glass. This variation would be especially adapted to be used whereit is desired to show a colored light, since the rays reflected by thecrystals would nat-' urally assume, more or less, the color of thecrystals.

While I have thus described the preferred forms of my invention I wishto have it understood that slight changes may-be made within the scopeof the claims hereto attached without afi'ecting the spirit of theinvention.

I claim:

1. In combirgtipn with a vehicle, a radium emergency light comprising aface having a convex central part and a concave marginal part. one ofsaid parts being radium painted and the other of reflecting material,and having means adapted to be secured to the vehicle.

2. In combination with a vehicle, a radium emergency light comprising aface having aconvex central and a concave marginal part. one of saidparts being radium painted and the other part being of colored andreflecting material. and having means adapted to be secured to thevehicle.

3. In combination with 3;Y8lll6l6, a radium emergency light comprising aface having a convex central and a concave marginal part, one of saidparts being radium painted and the other part being made of coloredcrystal glass, and having means adapted to be secured to the vehicle.

